GB475808A - Light dividing device - Google Patents
Light dividing deviceInfo
- Publication number
- GB475808A GB475808A GB14723/36A GB1472336A GB475808A GB 475808 A GB475808 A GB 475808A GB 14723/36 A GB14723/36 A GB 14723/36A GB 1472336 A GB1472336 A GB 1472336A GB 475808 A GB475808 A GB 475808A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prism
- images
- partly
- reflecting
- partly reflecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
- G02B27/1013—Beam splitting or combining systems for splitting or combining different wavelengths for colour or multispectral image sensors, e.g. splitting an image into monochromatic image components on respective sensors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
- G02B27/102—Beam splitting or combining systems for splitting or combining different wavelengths for generating a colour image from monochromatic image signal sources
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/144—Beam splitting or combining systems operating by reflection only using partially transparent surfaces without spectral selectivity
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/145—Beam splitting or combining systems operating by reflection only having sequential partially reflecting surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/145—Beam splitting or combining systems operating by reflection only having sequential partially reflecting surfaces
- G02B27/146—Beam splitting or combining systems operating by reflection only having sequential partially reflecting surfaces with a tree or branched structure
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
475,808. Optical systems; colour photography. TECHNICOLOR MOTION PICTURE CORPORATION. May 25, 1936, No. 14723. Convention date, Jan. 16. [Class 97 (i)] A light-dividing system for colour photography &c., of the type employing contacting prism elements with partly reflecting as well as totally reflecting surfaces, consists of a prism element receiving the incident light and forming with at least two additional prism elements at least two partly reflecting surfaces inclined to each other, at least one element having a totally reflecting surface inclined to the partly reflecting surfaces for deviating a component beam coming from a partly reflecting surface. The form shown in Fig. 1 consists of three similar right-angled prisms 1, 2, 3 placed in contact with each other, the contact surfaces 16, 17 being rendered partly reflecting. A beam R incident normallv on the surface 5 of the prism 1 is partly reflected at the surface 16, the reflected beam A being totally reflected at the surface 5 to emerge normally from the surface 11. The beam B transmitted by the surface 16 is again divided at the surface 17, the beam C reflected by the latter surface emerging normally from the surface 12 while the transmitted beam D emerges normally from the surface 13. In Fig. 2, the prism 3 is omitted and the prism 2 is divided into two prisms 32, 33 having a partly reflecting contact surface 37. In this form, total reflection occurs at the surfaces 5, 36. As shown in Fig. 1, the images a, c may be recorded on a double-width film W moving in a direction parallel to the apex line of the prism combination, the image d being recorded on an ordinary film F also moving parallel to this line. Alternatively, as in Fig. 2, the images a, c may be formed on successive spaces of an ordinary film 43 moving at right-angles to the apex line, the film 44 also moving at right-angles to this line. Fig. 4 shows a system producing four images and consisting of three similar isosceles prisms 61, 62, 63 placed in contact to form a combination of equilateral triangular section, the contact surfaces 64, 65, 66 being partly reflecting. The paths of the rays forming four images k, m, n, p are clear from the Figure. With this form the four images can be viewed simultaneously in superposition by a lens Q. U.S.A. Specification 1,738,095 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US475808XA | 1936-01-16 | 1936-01-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB475808A true GB475808A (en) | 1937-11-25 |
Family
ID=21949795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14723/36A Expired GB475808A (en) | 1936-01-16 | 1936-05-25 | Light dividing device |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB475808A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001026384A1 (en) * | 1999-10-06 | 2001-04-12 | Optical Coating Laboratory, Inc. | Color separating prism assembly and image projection display system |
-
1936
- 1936-05-25 GB GB14723/36A patent/GB475808A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001026384A1 (en) * | 1999-10-06 | 2001-04-12 | Optical Coating Laboratory, Inc. | Color separating prism assembly and image projection display system |
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